Design and Practice of Super-large Deep Foundation Pit Adjacent to Subway in Shanghai

The construction of foundation pit in soft soil area is very difficult and the risk is high. Based on the super deep foundation pit project in Shanghai core area, combined with the subway protection requirements, through targeted protection design for the deep foundation pit near the subway, and strengthening the process control of the foundation pit construction, the subway structure is well protected while ensuring the smooth implementation of the foundation pit project. Engineering practice shows that a series of safety protection measures adopted in the design are reasonable and reliable, which can provide reference for similar deep foundation pit projects.